CN108457273A - A kind of steel pipe slope protection pile pile recovery method - Google Patents
A kind of steel pipe slope protection pile pile recovery method Download PDFInfo
- Publication number
- CN108457273A CN108457273A CN201810221397.5A CN201810221397A CN108457273A CN 108457273 A CN108457273 A CN 108457273A CN 201810221397 A CN201810221397 A CN 201810221397A CN 108457273 A CN108457273 A CN 108457273A
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- steel pipe
- pile
- slope protection
- pipe slope
- protection pile
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 164
- 239000010959 steel Substances 0.000 title claims abstract description 164
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000011084 recovery Methods 0.000 title claims abstract description 11
- 239000004568 cement Substances 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 239000011440 grout Substances 0.000 claims abstract description 11
- 239000004567 concrete Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 25
- 239000000758 substrate Substances 0.000 claims description 24
- 239000002689 soil Substances 0.000 claims description 14
- 230000010355 oscillation Effects 0.000 claims description 13
- 239000011083 cement mortar Substances 0.000 claims description 11
- 230000000630 rising effect Effects 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 6
- 235000014121 butter Nutrition 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 230000010412 perfusion Effects 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000008719 thickening Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
Abstract
The invention discloses a kind of steel pipe slope protection pile pile recovery methods, this method in the stake holes set by laying concrete guard wall pipe and PVC wall protection pipes, retaining wall is formed inside stake holes, stake holes collapse hole can be prevented when hanging steel pipe slope protection pile, surrounding formation pressure can be resisted well in steel pipe withdrawal process simultaneously, reduce Stratum Loss, grout injection can form cement cliff after wall protection pipe is internal stiffening in gap between steel pipe slope protection pile and wall protection pipe, thickening wall protection pipe is played to be allowed to completely attach to work together with steel pipe slope protection pile with steel pipe slope protection pile, resist surrounding formation pressure, achieve the effect that reduce Stratum Loss.This method, which can reduce, bonds drag effect between steel pipe slope protection pile withdrawal process steel-pipe pile and Behavior of Hardened Cement Paste, keep withdrawal process more smooth, reach simultaneously and fatigue damage is caused to Behavior of Hardened Cement Paste outside steel pipe, prevent the phenomenon that wall protection pipe is moved up with steel pipe slope protection pile in withdrawal process, reduces surrounding buildings composition deformation.
Description
Technical field
The invention belongs to engineering construction technology fields, are mainly used for recoverable steel pipe slope protection pile pile removal process
In.
Background technology
During City Building foundation pit construction, recoverable steel pipe slope protection pile as a kind of novel support form
In Bracing Process through appearing in base pit engineering.Recoverable steel pipe slope protection pile occupied ground in construction is smaller, stiffness by itself
It is higher, and component can shorten the construction time at the scene while factory is made, and quality is more reliable, save
While duration and have the advantages that repeat to recycle.
But recoverable steel pipe slope protection pile still remains problem to be solved during construction：(1) how to reduce
Stratum Loss (2) caused by withdrawal process reduces the resistance in withdrawal process to tube wall, and steel pipe is enable smoothly to extract (3)
Formed with surrounding structure in Excavation Process it is good couple, in Excavation Process can preferably with surrounding structure
It works together.
Invention content
This method is based on recoverable steel pipe slope protection pile method for protecting support, using concrete guard wall pipe and PVC wall protection pipe conducts
The outer wall protection pipe of steel-pipe pile, butter+stretched film as steel pipe outside isolated material, cement mortar as steel pipe slope protection pile and wall protection pipe it
Between gap grouting material, be a kind of recoverable steel pipe slope protection pile pile pulling recovery method, mainly solve following technical problem：
(1) steel pipe slope protection pile is outer is efficiently isolated drag reduction technology between cement mortar.By the way that isolated material is carried out outside steel pipe slope protection pile
It performs, reaches and form isolating interface between later stage grout injection, keep the extraction removal process of steel pipe slope protection pile more smooth.
(2) the outer Behavior of Hardened Cement Paste fast vibration fatigue damage technology of steel pipe slope protection pile.By being carried out to pile crown oscillation point with excavation machine vibratory hammer
Vibration forms steel pipe slope protection pile stake side Behavior of Hardened Cement Paste in the case where vibrating force effect and damages, makes steel pipe slope protection pile stake side Behavior of Hardened Cement Paste and steel
Pipe slope protection pile is detached from, and having the function that, which prevents steel pipe slope protection pile wall protection pipe in withdrawal process from moving up (3) with steel pipe, prevents stake holes
Stratum Loss technology caused by removal process is extracted in collapse hole and reduction.
To achieve the above object, the technical solution adopted by the present invention is a kind of steel pipe slope protection pile pile recovery method, the party
Method sets stake holes in steel pipe slope protection pile unwrapping wire position using clean-out machine mud off pore-forming mode, then uses oil thread rope (1)
Steel substrate (2) is fixed on steel substrate fixed frame (3), by wall protection pipe (4) be placed in steel substrate (2) and and limit steel bar
(5) it blocks, in wall protection pipe (4) material that the poor construction site of stratum soil property condition uses for concrete material；Stratum soil property
Wall protection pipe (4) material that the preferable construction site of condition is selected is PVC material.
The features as poor geologic condition refers to that geology soil is soft, the situation of self-stable ability difference.
The stratum soil property condition preferably geology soil is hard, the good situation of self-stable ability.
Loosen oil thread rope (1) wall protection pipe (4) is put into stake holes, and wall protection pipe (4) is lengthened section by section until steel in stake holes mouth
Substrate (2) reaches stake holes bottom.Isolated material (7) will be performed respectively outside steel pipe slope protection pile (6), steel pipe slope protection pile (6) outside
Then portion's coating butter is uniformly wrapped up in and twines stretched film again.The steel pipe slope protection pile (6) for having performed isolated material (7) lifting is placed on
In wall protection pipe (4), the gap section perfusion ratio of mud after hanging in place between steel pipe slope protection pile (6) and wall protection pipe (4) is 1:
0.5 cement mortar (8) needs to prevent the steel pipe slope protection pile (6) after grout injection from floating in grout injection (8) simultaneously
In steel pipe slope protection pile (6) internal water flooding.Wait for that excavation of foundation pit is completed, constructure body structure, which performs, finishes and backfill the laggard of fertile slot
The recovery operation of row steel pipe slope protection pile (6) needs the internal water of steel pipe slope protection pile (6) to drain before recycling, then will support
Beam (9) passes through rising for steel pipe slope protection pile (6) to pull out hole, and steel pipe slope protection pile (6) is first pulled up 1m height, pile-drawing machine with pile-drawing machine (10)
(10) oil pressure gauge has apparent when falling after rise and maintaining 0.1~0.3Mpa, and hole is pulled out by rising for steel pipe slope protection pile (6) using crane
Steel pipe slope protection pile (6) is extracted and is backfilled stake holes with plain soil.
In the case of pile-drawing machine if (10) oil pressure gauge does not fall after rise and maintains high pressure, the stake in steel pipe slope protection pile (6) is needed
Top oscillation point (11) digging machine disintegrating hammer (12) applies the Behavior of Hardened Cement Paste after vibration force makes cement mortar (8) harden and damage and failure occurs
And disengaged with steel pipe slope protection pile (6), specific practice is distinguished on four stake top oscillation points (11) with digging machine disintegrating hammer (12)
Vibration 200~400 times, time of vibration is no less than 10min, after steel pipe slope protection pile (6) declines 0.5m, then will using pile-drawing machine (10)
Steel pipe slope protection pile (6) pulls up 1m height, and pile-drawing machine (10) oil pressure gauge, which has, significantly falls and maintain 0.1~0.3Mpa after rise, if oily
Pressure table is not fallen after rise still, is recycled digging machine disintegrating hammer (12) and is vibrated 200~400 respectively again on four stake top oscillation points (11)
Secondary, time of vibration is no less than 10min, after steel pipe slope protection pile (6) declines 0.5m, then uses pile-drawing machine (10) by steel pipe slope protection pile
(6) operation of 1m height is pulled up, when the oil pressure gauge of pile-drawing machine (10), which has, obviously to be fallen after rise and maintain 0.1~0.3Mpa, most
Crane is used to pull out hole by rising for steel pipe slope protection pile (6) and extract steel pipe slope protection pile (6) and backfilled stake holes with element is native afterwards.
Oil thread rope (1) is passed through from the lacing hole of steel substrate (2) lower part, and the both ends of oil thread rope (1) are fixed on steel substrate and fix
On frame (3), wall protection pipe (4) is placed in steel substrate (2) and is blocked with limit steel bar (5), and isolated material (7) is attached to steel pipe shield
The surface of slope stake (6), steel pipe slope protection pile (6) are placed in wall protection pipe (4), the seam between steel pipe slope protection pile (6) and wall protection pipe (4)
Gap grout injection (8), supporting beam (9) are pulled out hole from steel pipe slope protection pile (6) and are passed through, and supporting beam (9) both ends are placed on pile pulling
Rising for machine (10) is pulled out on beam, and digging machine disintegrating hammer (12) applies vibration force by the stake top oscillation point (11) of steel pipe slope protection pile (7).
Compared with prior art, this method in the stake holes set by laying concrete guard wall pipe and PVC retaining walls
Pipe, forms retaining wall inside stake holes, stake holes collapse hole can be prevented when hanging steel pipe slope protection pile, while in steel pipe withdrawal process
In can resist surrounding formation pressure well, reduce movement and deformation of the surrounding soil into stake holes, to reduce Stratum Loss,
Grout injection can form cement cliff after wall protection pipe is internal stiffening in gap between steel pipe slope protection pile and wall protection pipe,
It plays thickening wall protection pipe to be allowed to completely attach to work together with steel pipe slope protection pile with steel pipe slope protection pile, resistance is peripherally laminated
Power achievees the effect that reduce Stratum Loss.
Therefore, this method is applied to the work progress of steel pipe slope protection pile, reduction steel pipe slope protection pile can be reached and extracted
Drag effect is bonded between journey steel-pipe pile and Behavior of Hardened Cement Paste, keeps withdrawal process more smooth, while reaching and being caused to Behavior of Hardened Cement Paste outside steel pipe
Fatigue damage prevents the phenomenon that wall protection pipe is moved up with steel pipe slope protection pile in withdrawal process.In addition it can also reach and reduce steel pipe shield
Stratum Loss caused by slope stake withdrawal process reduces surrounding buildings composition deformation and prevents the effect of stake holes collapse hole.
Description of the drawings
Fig. 1 is steel substrate front view.
Fig. 2 is steel lining underneath side elevation view.
Fig. 3 is to hang wall protection pipe schematic diagram.
Fig. 4 is slope protection pile vertical view after the completion of performing.
Fig. 5 is to perform to complete slope protection pile A-A sectional views.
Fig. 6 is that digging machine disintegrating hammer shakes a schematic diagram.
Fig. 7 is pile pulling schematic diagram.
In figure：1, oil thread rope 2, steel substrate 3, steel substrate fixed frame 4, wall protection pipe 5, limit steel bar 6, steel pipe slope protection pile 7, every
From material 8, cement mortar 9, supporting beam 10, pile-drawing machine 11, stake top oscillation point 12, digging machine disintegrating hammer.
Specific implementation mode
As shown in figs. 1-7, a kind of steel pipe slope protection pile pile recovery method, this method are used in steel pipe slope protection pile unwrapping wire position
Clean-out machine mud off pore-forming mode sets stake holes, and stake holes aperture is 900mm, then uses oil thread rope (1) by steel substrate (2)
It is fixed on steel substrate fixed frame (3), wall protection pipe (4) is placed in steel substrate (2) and is blocked with limit steel bar (5), on ground
Wall protection pipe (4) material that the poor construction site of layer soil condition uses is concrete material；Stratum soil property condition is preferably applied
Wall protection pipe (4) material selected to workshop is PVC material.
Loosen oil thread rope (1) wall protection pipe (4) is put into stake holes, and wall protection pipe (4) is lengthened section by section until steel in stake holes mouth
Substrate (2) reaches stake holes bottom.Isolated material (7) will be performed respectively outside steel pipe slope protection pile (6), steel pipe slope protection pile (6) outside
The butter of 3mm~4mm thickness is smeared in portion, is then uniformly wrapped up in again and is twined stretched film.The steel pipe slope protection pile of isolated material (7) will have been performed
(6) lifting is placed in wall protection pipe (4), and the gap section after hanging in place between steel pipe slope protection pile (6) and wall protection pipe (4) fills
Water filling gray scale is 1:0.5 cement mortar (8), to prevent the steel pipe slope protection pile (6) after grout injection from floating, in grout injection
(8) it while needing in steel pipe slope protection pile (6) internal water flooding.Wait for that excavation of foundation pit is completed, constructure body structure, which performs, to finish and return
The recovery operation that fertile slot carries out steel pipe slope protection pile (6) later is filled out, is needed before recycling the internal water pumping of steel pipe slope protection pile (6)
It is dry, it then passes through rising for steel pipe slope protection pile (6) to pull out hole supporting beam (9), is first pulled up steel pipe slope protection pile (6) with pile-drawing machine (10)
1m height, pile-drawing machine (10) oil pressure gauge have apparent when falling after rise and maintaining 0.1~0.3Mpa, pass through steel pipe bank protection using crane
Rising for stake (6) is pulled out hole by steel pipe slope protection pile (6) extraction and is backfilled with element soil by stake holes.
In the case of pile-drawing machine if (10) oil pressure gauge does not fall after rise and maintains high pressure, the stake in steel pipe slope protection pile (6) is needed
Top oscillation point (11) digging machine disintegrating hammer (12) applies the Behavior of Hardened Cement Paste after vibration force makes cement mortar (8) harden and damage and failure occurs
And disengaged with steel pipe slope protection pile (6), specific practice is distinguished on four stake top oscillation points (11) with digging machine disintegrating hammer (12)
Vibration 200~400 times, time of vibration is no less than 10min, after steel pipe slope protection pile (6) declines 0.5m, then will using pile-drawing machine (10)
Steel pipe slope protection pile (6) pulls up 1m height, and pile-drawing machine (10) oil pressure gauge, which has, significantly falls and maintain 0.1~0.3Mpa after rise, if oily
Pressure table is not fallen after rise still, is recycled digging machine disintegrating hammer (12) and is vibrated 200~400 respectively again on four stake top oscillation points (11)
Secondary, time of vibration is no less than 10min, after steel pipe slope protection pile (6) declines 0.5m, then uses pile-drawing machine (10) by steel pipe slope protection pile
(6) operation of 1m height is pulled up, when the oil pressure gauge of pile-drawing machine (10), which has, obviously to be fallen after rise and maintain 0.1~0.3Mpa, most
Crane is used to pull out hole by rising for steel pipe slope protection pile (6) and extract steel pipe slope protection pile (6) and backfilled stake holes with element is native afterwards.
Oil thread rope (1) is passed through from the lacing hole of steel substrate (2) lower part, and the both ends of oil thread rope (1) are fixed on steel substrate and fix
On frame (3), wall protection pipe (4) is placed in steel substrate (2) and is blocked with limit steel bar (5), and isolated material (7) is attached to steel pipe shield
The surface of slope stake (6), steel pipe slope protection pile (6) are placed in wall protection pipe (4), the seam between steel pipe slope protection pile (6) and wall protection pipe (4)
It is 1 that the ratio of mud, which is perfused, in gap:0.5 cement mortar (8), supporting beam (9) are pulled out hole from steel pipe slope protection pile (6) and are passed through, supporting beam (9) two
End is placed on rising for pile-drawing machine (10) and pulls out on beam, the stake top oscillation point that digging machine disintegrating hammer (12) passes through steel pipe slope protection pile (7)
(11) apply vibration force.
This method is formed by laying concrete guard wall pipe and PVC wall protection pipes in the stake holes set inside stake holes
Retaining wall can prevent stake holes collapse hole when hanging steel pipe slope protection pile, while can be resisted well in steel pipe withdrawal process
Surrounding formation pressure reduces movement and deformation of the surrounding soil into stake holes, to reduce Stratum Loss, in steel pipe slope protection pile and shield
Grout injection can form cement cliff after wall protection pipe is internal stiffening in gap between wall pipe, and playing thickening wall protection pipe makes
With steel pipe slope protection pile completely attach to steel pipe slope protection pile work together, resist surrounding formation pressure, reach reduce stratum
The effect of loss.
Therefore, this method is applied to the work progress of steel pipe slope protection pile, reduction steel pipe slope protection pile can be reached and extracted
Drag effect is bonded between journey steel-pipe pile and Behavior of Hardened Cement Paste, keeps withdrawal process more smooth, while reaching and being caused to Behavior of Hardened Cement Paste outside steel pipe
Fatigue damage prevents the phenomenon that wall protection pipe is moved up with steel pipe slope protection pile in withdrawal process.In addition it can also reach and reduce steel pipe shield
Stratum Loss caused by slope stake withdrawal process reduces surrounding buildings composition deformation and prevents the effect of stake holes collapse hole.
Claims (2)
1. a kind of steel pipe slope protection pile pile recovery method, it is characterised in that：This method is in steel pipe slope protection pile unwrapping wire position using anti-
Circulation drilling machine mud off pore-forming mode sets stake holes, and steel substrate (2) is then fixed on steel substrate fixed frame with oil thread rope (1)
(3) on, wall protection pipe (4) is placed in steel substrate (2) and is blocked with limit steel bar (5), in the construction of stratum soil property condition difference
Wall protection pipe (4) material that place uses is concrete material；Wall protection pipe (4) material that the good construction site of stratum soil property condition is selected
Matter is PVC material；
Loosen oil thread rope (1) wall protection pipe (4) is put into stake holes, and wall protection pipe (4) is lengthened section by section until steel substrate in stake holes mouth
(2) reach stake holes bottom；Isolated material (7) will be performed respectively outside steel pipe slope protection pile (6), applied outside steel pipe slope protection pile (6)
Butter is smeared, then uniformly wraps up in again and twines stretched film；The steel pipe slope protection pile (6) for having performed isolated material (7) lifting is placed on retaining wall
It manages in (4), the gap section perfusion ratio of mud after hanging in place between steel pipe slope protection pile (6) and wall protection pipe (4) is 1:0.5
Cement mortar (8)；Wait for that excavation of foundation pit is completed, constructure body structure, which performs, finishes and backfill fertile slot progress steel pipe slope protection pile later
(6) recovery operation needs the internal water of steel pipe slope protection pile (6) to drain, supporting beam (9) is then passed through steel pipe before recycling
Hole is pulled out in rising for slope protection pile (6), steel pipe slope protection pile (6) is first pulled up 1m height with pile-drawing machine (10), pile-drawing machine (10) oil pressure gauge has
When significantly falling after rise and maintain 0.1~0.3Mpa, hole is pulled out by steel pipe slope protection pile by rising for steel pipe slope protection pile (6) using crane
(6) it extracts and is backfilled stake holes with plain soil；
If in the case of pile-drawing machine (10) oil pressure gauge does not fall after rise and maintains high pressure, the stake top in steel pipe slope protection pile (6) is needed to shake
Dynamic point (11) digging machine disintegrating hammer (12) apply the Behavior of Hardened Cement Paste generation damage and failure after vibration force makes cement mortar (8) harden and with
Steel pipe slope protection pile (6) disengages, and specific practice is vibrated respectively on four stake top oscillation points (11) with digging machine disintegrating hammer (12)
200~400 times, time of vibration is no less than 10min, after steel pipe slope protection pile (6) declines 0.5m, then uses pile-drawing machine (10) by steel pipe
Slope protection pile (6) pulls up 1m height, and pile-drawing machine (10) oil pressure gauge, which has, significantly falls and maintain 0.1~0.3Mpa after rise, if oil pressure gauge
It does not fall after rise still, recycles digging machine disintegrating hammer (12) and vibrated 200~400 times respectively again on four stake top oscillation points (11),
Time of vibration is no less than 10min, after steel pipe slope protection pile (6) declines 0.5m, then using pile-drawing machine (10) is pulled out steel pipe slope protection pile (6)
The operation for playing 1m height finally uses when the oil pressure gauge of pile-drawing machine (10), which has, obviously to be fallen after rise and maintain 0.1~0.3Mpa
Crane is pulled out hole and extracts steel pipe slope protection pile (6) and backfilled stake holes with element is native by rising for steel pipe slope protection pile (6)；
Oil thread rope (1) is passed through from the lacing hole of steel substrate (2) lower part, and the both ends of oil thread rope (1) are fixed on steel substrate fixed frame (3)
On, wall protection pipe (4) is placed in steel substrate (2) and is blocked with limit steel bar (5), and isolated material (7) is attached to steel pipe slope protection pile
(6) surface, steel pipe slope protection pile (6) are placed in wall protection pipe (4), and the gap between steel pipe slope protection pile (6) and wall protection pipe (4) fills
Cement injection (8), supporting beam (9) are pulled out hole from steel pipe slope protection pile (6) and are passed through, and supporting beam (9) both ends are placed on pile-drawing machine
(10) rise is pulled out on beam, and digging machine disintegrating hammer (12) applies vibration force by the stake top oscillation point (11) of steel pipe slope protection pile (7).
2. a kind of steel pipe slope protection pile pile recovery method according to claim 1, it is characterised in that：Cement mortar (8) is perfused
In the process, it to prevent the steel pipe slope protection pile (6) after grout injection from floating, in grout injection (8) while needing to protect in steel pipe
Slope stake (6) internal water flooding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810221397.5A CN108457273B (en) | 2018-03-17 | 2018-03-17 | Piling recovery method for steel pipe slope protection piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810221397.5A CN108457273B (en) | 2018-03-17 | 2018-03-17 | Piling recovery method for steel pipe slope protection piles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108457273A true CN108457273A (en) | 2018-08-28 |
| CN108457273B CN108457273B (en) | 2020-02-14 |
Family
ID=63236806
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810221397.5A Expired - Fee Related CN108457273B (en) | 2018-03-17 | 2018-03-17 | Piling recovery method for steel pipe slope protection piles |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116571535A (en) * | 2023-04-20 | 2023-08-11 | 中铁建工集团有限公司 | Pulling-resistant pile steel pipe fitting recycling device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560768A (en) * | 2009-05-20 | 2009-10-21 | 毕建东 | Overall process construction method for hammering pile, special device therefor and application thereof |
| CN101736746A (en) * | 2009-12-04 | 2010-06-16 | 上海智平基础工程有限公司 | Construction method for vibrator pipe sinking high-pressure grouting underpinning pile extracting |
| CN202117049U (en) * | 2011-05-31 | 2012-01-18 | 中铁十九局集团第二工程有限公司 | Latch type steel pipe pile |
| CN102877463A (en) * | 2012-09-28 | 2013-01-16 | 中国建筑第六工程局有限公司 | Recyclable foundation pit support pipe pile and application and recovery method thereof |
-
2018
- 2018-03-17 CN CN201810221397.5A patent/CN108457273B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560768A (en) * | 2009-05-20 | 2009-10-21 | 毕建东 | Overall process construction method for hammering pile, special device therefor and application thereof |
| CN101736746A (en) * | 2009-12-04 | 2010-06-16 | 上海智平基础工程有限公司 | Construction method for vibrator pipe sinking high-pressure grouting underpinning pile extracting |
| CN202117049U (en) * | 2011-05-31 | 2012-01-18 | 中铁十九局集团第二工程有限公司 | Latch type steel pipe pile |
| CN102877463A (en) * | 2012-09-28 | 2013-01-16 | 中国建筑第六工程局有限公司 | Recyclable foundation pit support pipe pile and application and recovery method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116571535A (en) * | 2023-04-20 | 2023-08-11 | 中铁建工集团有限公司 | Pulling-resistant pile steel pipe fitting recycling device and method |
| CN116571535B (en) * | 2023-04-20 | 2023-10-27 | 中铁建工集团有限公司 | Pulling-resistant pile steel pipe fitting recycling device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108457273B (en) | 2020-02-14 |
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